Pipe-casting machine.



J. lK. GUNN.

PIPE GASTING MACHINE. APPLIoA'TIoN FILED MAY e', 1907.

v I4 S 4, TN. Ma. 9. wt.

ATTORNEYS J. K. GUNN.

PIPE CASTING MACHINE.

ArPLIoATIoN FILED MAY e, 19p?. Y

3 SHEETS-SHBET 2.

ATTORNEYS J'. K. GUNN.

PIPE CASTING MAOHINE.

Y APPLICATION FILED MAY 6, 1907.

Patented Sept. 7, 1909.

3 SHEETS-SHEET 3.

WITNESSES( ATTORNEYS To all whom it may concer/n:

einen srArEsrATENr OFFICE.

1 JOHN iz. GUNN, on U'rIcA, NEW YORK.

PIPE-CASTING MACHINE.

eaaasa.

Be it known that I, JOHN' K. GUNN, of

Utica, in the county of Oneida and State of New York, have inventedcertain new and useful Improvements in Pipe-Casting .Machines; and I dohereby declare that the following is a full, c1ear, `and exactdescription thereof, which will enable others, skilled inthe art towhichvit appertains to make and use the saine, reference being had tothe accompanying drawings, and to the charac-` `ters of reference markedthereon, which form part of this specication.

The object of my presentinvention is. td provide an improved machine forcasting pipe, which may be said to operate by continuous process. l Y,

Briey described the machine consists of an intermittently moving turntable carrying on its outer rim in an upright position the flasks. TheseHasks are passed under a molding machine, Where the sand is intro` ducedand formed to size,y and after being internally coated are passed into adrying oven having an induced draft through the mold. After passingthrough the oven the cores are set, thev metal poured, the flasksremoved from theturn table, shook out and replaced thereon, when theyagain pass to the molding machine.`

Figure 1 shows a vertical 'section of the machine. Fig. 2 is a partialplan view in vwhich sections are broken out and shown in horizontalsection to better illustrate the construction. Fi 3 'is .a partialvertical sectional view of the machine and a` flask on an enlargedscalefrom that employed in Figs. 1 and 2. Fig. 4 is a vertical sectionof aiiask and the rammer in connection with small portions of themachine. `Fig. 5 is a horizontal section on line vAw-B of Fig. 3. f

Referring to the reference letters and iigures in a more particulardescription of the device, 41 indicates a turn table or carrier turningyon a fixed pivot 2 in a suitable base or foundation and supported 'on acircular track `3 provided on a suitable base. or foundation by rollers4f interposed betweeny said track 3 and an inverted circular track 5provided on the underside of the turn table. The rollers 4 aremaintainedin position by being mounted on the radial shaftsV 6, whichare held together at their outer ends by Patented Sept. '7,11909.

spacing strip orband 7, and at their inner ends da bearing rotating disk8.

yAround .the yperiphery the turn table is provided with a circularlatform 9. This lplatform 4'mi' ht be carrie entirel over the turn tableeam construction, ut bein practically useless otherwise than around theperiphery is omitted. The turn table is provided ywith an elevatedplatform 10,

Iwhich is Asupported by posts or uprights 1l. `This platform 10 ofcourse rotates withthe turn table, and is arranged substantially in thesame plane as the fixed floor 12 surrounding the pit in which themachine is erected. The circular track 5 isprovidedon the outer sidewith a face of gear teeth 5, with which is adapted to mesh a pinion 13for applying power to rotate the turn table. The diameter -of theplatform 9 of 'the turn table is greater than'that of the elevatedplatform 10 thereof, and occupies the space directly below in a verticalline, the circular o ening or space between the ed e .of the oor 12 andthe edge of the plat orm 10. The platform 9 of the turn table isprovided with a series of. openings over which are set the flasks 15,'so` that the openings in the turn table will register with the openingsthrou h the flask. At a suitable point on the (peripi ery -of themachine is erected the mol form- 'ing or ramming machine, indicatedroughly by 16, the essential feature of which is the rammer 117. 'Asvarious forms of mold forming or ramming machines may be employed,

details of this construction are omitted. On

yner suspended curved wall 18", the top or cover 18c and walls.inclosing the lower part -19 under the space between the walls 18a and18". The peripheral edgeof the turn ltable 1 projects into the oventhrough a slotted opening at 20 between the suspended wall ,18h and thetop of thel fixed wall 19a, and divides the. upper portion ofv thev ovenfrom the lower portion 19 by thev circular platform 9 thereof.

For supplying heat or hot gases to the oven, there is provided asuitable number of in an independently 35 the position of the moldingmachm'e and and replacin f wash orinner coatin vments the n maticallyand, of

furnaces 21 which communicate withthe oven chamber through openings 21aat a point substantially at the bottom of the flasks., By means of asuitable suction blower or fan attached to fiue 22, which connects withthe lowerfpart 19, a draft is induced throu h the furnaces, and the ovenchamber, an `when fiasks are in position in the oven also downwardthrough the flasks. At each end the oven 18`is provided with slidinggates or doors 25 and 26 adapted to close the inlet and outlet openingsof the oven, exce t when temporarily opened to shift the asksinto anvout of the oven. After passing through the oventhere is a section ofthe turn table devoted to the work of settingthe cores S. Followin thisis a section'devoted to removing the asks,lopening and shaking outsection is in icatedgenerallyby lT and opposite this section theoor l2will ber'prefi erably cut out -as indicated at U in order to facilitatethe removal and replacing of the flasks.

y The fiasksl are of the ordinary longituopened tojdischarge thevcastingand the inclosingfsand. Thegtwo,... sections, however,'arep'referably hinged together; `When replaced' n` the 'tur`n""`tablethe flasks Ilare returned to the molding 'or rammingmachine.

Provision will ordinarily be made.`=between the intake end' of/the ovenfor one or two flasks, as indicated at V, at which point the y i g maybe applied to the mold.v In operation the turn table is intermittentlymoved to bring one of the iiasks ijn position under the molding machinewhen the mold will be made. When made the turn table will be moved aheadonev position bringing another fiask under themachine. At the time ofthese moveates, or doors 25 and 26 will be opened to et one liask vpassinto the oven and one 'flask pass out from the oven. These doors .may bearranged to be operated autocourse, are arranged to slide 1n through thespaces between the flasks on the tur'n table, the flasks being suitablyspaced to permit so doing. It will .be observed thatthe hot'gasesdirectly from the most effective manner. Also that at the time theheated gases reach the point where they come 1n contact with the freshlylterruptingthe continuous operation of the and making ready the' head ofthe mold and pouring the metal. .This section is indicated on thedrawing by them on the turn table. Thisy said openings and the flaskextensions theremolded sand with its wash or inner coating they havelost a part of their heat to the flask body.' The combined heat andcirculation serve to rapidly dry the molds without injury to the moldsor their inner coatings, and the fact that provision is made in .thelength of the oven for receiving'at one time a considerable number offlasks affords suflicient time to dry the 'mold without inmachine.

It isv evident that numerous changes and modifications may be made inthe construction Without departing from the spirit of my invention.

so What I claim as new and desire to sel cure by Letters Patent is:

1. In a pipe casting machine, the combination of an oven adapted toreceive a number o f tubular liasks in upright position over lopeningsin the bottom thereof, a furnace lhavin its combustion chamber openinginto the x(lower portion of the oven, and means for exhausting the oventhrough of tothe upper part of the oven, substantially as set forth.

2. In a casting machine, an oven through which the flasks are passed ysaid carrier, means for supplying heat to the oven, and means forinducing a draft from said oven to the exterior of the flasks and thencethrough the interior of the molds therein, substantially as set forth.

3. The combination in a machine of the character described of a flaskcarrier adapted to carry tubular flasks in upright position, a moldingmachine arranged adjacent to the carrier and adapted to operate in theflasks mounted thereon, and an oven through which the flasks are passedby the carrier and means for inducing a draft through the liasks while.in the oven, substantially as set foith.

4. The combination in a machine of the character described of a flaskcarrier adapted to carry tubular flasks in an upright posia fiaskcarrier,

tion, a molding machine arranged adjacent to the carrier and adapted tooperate on the Vflasks mounted thereon, an oven through which the flasksare passed on the carrier adapted to receive a plurality of flasks andmeans for inducing a downward draft out of the oven through a series ofthe lflasks in the oven', substantially as set forth.

5. The combination in a casting machine of-a flask carrier, a moldingmachine arranged adjacent to the carrier, a drying oven through whichthe liasks are passed on the carrier, and means foiheating the oven andinducing a draft through the fiasks in the oven, substantially as setforth.

6. The combination in a continuous process pipe casting machine of aflask carrier, a`molding machine adjacent towhich the carrier passes,and an oven through which the flasks are passed, and means for ventilatgthe oven through the flasks, substantially y as set forth.

7 In a pipe casting machine, the combination of an oven adapted toreceive a number of tubular flasks in an upright position, a carriersupporting the flasks, a furnace deliverin heated gasesinto the ovenadjacent tothe iottom, an exhaust flue `in communication with the lowerends of the flasks and means for inducing a draft from the furnace intothe oven and exhausting the oven by a downward draft through the flasksand said exhaust flue, substantially as set forth.

8. The combination in a continuous procyess pipe casting machine of aflask carrier havmg a 4circular perforated platform on which thevflasks` stand in upright position, an oven through which theplatformpasses dividing the same into upper and lower chambers, means forsupplying heated gases to the upgr chamber, and means for withdrawing te gases from the lower chamber, substantially as set forth.

9. The combination in a continuous proc` ess pipe casting machine of aflask carrier adaptedv to carry flasks in upright position' in acircular row and located in a pit in such manner as to provide for theflasks projecting above the-surface surrounding the pit, an uppercarrier platform' occupying the yspace within the circle of the row offlasks and located substantially in the. plane of the surroundingsurfaceof the pit, substantially as set forth.

10.. The combination in acontinuous process .pipe'casting machine" of aflask carrier having a circular platform perforated at suitableintervals to receive the flasks standing on and over said perforations,and a curved o ven receiving a section of the circular platform, doorsat the ends of the oven arranged to pass across the platform and betweenthe flasks arranged thereon, and means for heating the oven,substantially as set forth 11. In a pipe casting machine, thecombination of an oven adapted to receive a-number of tubular flasks 1nupright position, a carrier passing the flasks through the oven, afurnace delivering heated gases into the oven adjacent to one end of theflask, and means for applying aV suction to the ends of the flasksnextthe furnace to induce a draft from the furnace into the oven andexhausting the oven through the flasks, substantially .as set forth.

12. In a pipe casting machine, the combination of an oven adapted toreceive a number of tubular flasks in upright position, a carrierplatform providing a bottom for the oven and having openings over whichthe flasks are placed, a furnace delivering gases into the bottom of theoven, means for ex-

